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发明名称
Dipper-stick control for excavating machines
摘要
申请公布号
US1891351(A)
申请公布日期
1932.12.20
申请号
US19310520856
申请日期
1931.03.07
申请人
THE BUCKEYE TRACTION DITCHER COMPANY
发明人
GEORGE CHARLES L.
分类号
E02F3/30
主分类号
E02F3/30
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代理人
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